god, my car is scary to me now at ~400whp. more power to you guys with 500+.

 

I have driven a 500+HP (at the wheels) APS TT Z with 315 race rubber (on a track) and still had to be very careful with the throttle. 500+ HP is probably more than any street tires can get to the ground. The TT was very smooth in it's power delivery though.

I have also driven a low 400HP (also at the wheels) Z with a vortech (same track). I didn't like the way it kicked in all at once. An extra, instant, 175hp is not good when you are cornering at the limit and feeding in throttle for corner exit..

 

its all relative...

 

fascinating Jeremy, very very deep, please elaborate.

 

I have driven a 400whp tt greddy z and an almost 400whp ati supercharged z and I like the greddy one better. Plus it has so much more potential

 

Fast is when your eyeballs roll back in your head and all you can see is your a$$ in your seat. NOW, that's fast.

 

just curious, but isn't that the reason why the throttle pedal can vary the amount of go and isn't an on/off switch?

 

^^ Lol!

 

Not true, I dont drive my car daily so when I do drive it, its a beast!

 

Fast is your car in the first two weeks of ownership.

 

Boost or no boost... that is the question.

Feeding throttle on a N/A (or even the aps TT) gives progressive amounts of power. Just to make a point, lets say 10 is full power and 0 is none.

N/A and TT would go 0,1,2,3,4,5,6,7,8,9,10. ( as you roll onto the throttle and the RPM's rise.) Of course, 10 on the TT represents a lot more power than 10 N/A.

The Vortech went 0,1,2,3,8,9,10! (When I was looking for 4,5, and, if the tires could handle it in the turn, maybe 6) I could have stayed out of boost (had I known exactly where it would kick in, on my first try? ) but I would have been going slower than the tires could handle. The tires could have taken a little more power, so I gave a little more throttle. What I got was A-LOT more power and some fun, but time wasting, oversteer. The Vortech's power delivery just wasn't smooth, when compared to N/A or the APS TT I drove.

 

dunno, it's completely smooth on my car from 0-10 that I'd say that's the #1 thing I was going for and completely achieved on my setup. It might be an overall slightly exponential curve, but it ends up being perfectly matched to how I think a good throttle response should be

Can it be possibly a bad tune or maybe the overall exhaust was too big where the low end wasn't very strong then suddenly shot up in power? Could it be the tires just weren't really that great enough to handle full throttle at high rpms? I run 295 R-compounds in the rear with a nismo LSD and it's been pretty good with turns

 

(Stillen exhaust)
It could have been the tune, but it delivered power just like the (stock turbo) EVO I drove. Off boost=OK on boost=HOLD ON! My brother's STI uses less boost and more displacement to smooth things out, and it works.

275 victo-racers IIRC. But I wasn't at full throttle.

 

I thought power delivery would be opposite to what your saying.. I've always thought SC produced more of a linear gradual power curve while turbos slap the instant torque on you and create wheel spin city..

Honestly its like sentry said.. Alot of it has to do with your right foot.. I let a few people drive my skyline and noone could launch it without massive wheel spin.. Me on the other hand, with some practise could get it off the line like nothing.. Just gotta drive the car for its power band.. Which does take some getting use to..

 

The roots-type SC (used for many stock SC's) has a rep for very linear power delivery. Centrifugal SC's, not so much. Single, small displacement-high boost, turbos also kick in late and hard. Twin turbos are another story. Both the stock 300Z TT and the APS 350Z TT that I drove showed smooth power delivery.

I use the same right foot on all the cars I drive. From the 500+WHP APS TT Z to our Magnum RT wagon and various FI and N/A cars from all over the power spectrum. (The list is quite long, now that I think about it).I am not a pro driver, but I've had enough seat time to understand my strengths and weaknesses. This anomaly was not my right foot. Even the car's owner agreed with my view of the cars power. He agreed with my "on/off switch" assessment.

 

I didn't mean to belittle your driving abilities mate.. Was just trying to say both can be useable with a good driver..

 

might be the bypass valve wasn't properly setup on that vortech car

 

I understand. The evo I drove had similar power delivery and evo's lay down awesome times with good drivers. But if I owned either a centrifugal SC or a low displacement / high boost vehicle, it would have some sort of learning curve. The TT,roots-type, and N/A vehicles seem easier to just get in and go fast. (If controlling 500 WHP, on course, can ever be considered "easy")

 

+1

 

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